#VU15743 Buffer over-read in nginx - CVE-2018-16845
Published: November 7, 2018
Vulnerability identifier: #VU15743
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-16845
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
nginx
nginx
Software vendor:
F5 Networks
F5 Networks
Description
The vulnerability allows a remote attacker to gain access to potentially sensitive information or trigger denial of service conditions.
The vulnerability exists due to a boundary condition when processing headers of MP4 files within the ngx_http_mp4_module module. A remote attacker can create a specially crafted MP4 file, trick the victim into uploading it on the server and trigger application crash or disclosure of the worker's process memory.
Successful exploitation of the vulnerability requires that nginx is compiled with support for ngx_http_mp4_module module (not a default configuration).
Remediation
Install updates from vendor's website.